Non-puncturable tire.



H. & P. E. BAILEY.

NON-PUNCTURABLE TIRE.

APPLICATION FILED MAY I4, I9I4.

Patented July 27, 1915.

@Nl TA@ ruin,

HARRIET BAILEY AND PEARL E. BAILEY, 0F HILLSDALE, UREGON,

NONPUNCTURABLE TIRE.

i Specication of Letters Patent.

Patented July 2?, 319115..

T0 all whom t may concern.'

Be it known that we, HARRIET BAILEY and PEARL E. BAiLEY, citizens of theUnited States, residing at Hillsdale, in the county of Multnomah andState of Oregon, have invented certain new and useful lmprovements inNon-Puncturable Tires; and we do hereby declare the following to be afull, clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame.

rl`his invention relates to non-puncturable tires, and one of theprincipal objects of the invention is to provide a tire composed of aninatable inner tube and a series of spirally wound rubber protectors forsaid tube, said protectors having intermediately wound rubber strips,and said protector being formed of rubber to thus provide a tire whichwill yield and at the same time cannot be punctured by means of anordinary piece of glass or a tack or other projections.

Another object of the invention is to provide a pneumatic tube having aprotector surrounding' the same, said protector comprising a hollowstrip or strips firm and heavy enough to withstand weight of a machinewithout collapsing, having a rounded outer surface and a curved innersurface to lie flat against the pneumatic inner tire, and rubber stripsto fit the grooves or spaces between the layers of the protector.

These and other objects may be attained by means of the constructionillustrated in the accompanving drawing, in Which,

Figure l is a side elevation of a non-punc turable tire made inaccordance with this invention, Fig. 2 is a sectional view of the same,taken transversely of the tire, with the coils enlarged, and Fig. 3 is alongitudinal section of a portion of the tire.

Referring tothe drawing, the numeral 1 designates an inflatable innerrubber tube, which may be of the usual or any suitable construction andthickness. Wound spit-ally around the inatable tube 1 is a stri-p orstrips of rubber forming spiral coils 2 lying closely together. rlhestrip of rubber is provided with a curved outer side 3 and the innerside is formed to lie flat against the outer surface of the innerinflatable tube l.

.When the protector strip 3 has been wound about the tube l, the groovesbetween the strips are filled by means of a ii/shaped strip of solidrubber Il, having rounded outer edges, said strip being placed in thegroove and wound tightly therein to hold the parts in place and to forma complete cover for the inner tube 1.

A non-puncturable tire made in accordance with this invention can bemanufactured at comparatively low cost and is reliable and efficient forits purpose. An ordinary projection such as would be met with by anautomobile or other vehicle wheel would not reach through the thickrubber protector 3, and if it should happen that the obstruction metwith should be disposed between the rubber strips or .members 3 and comein Contact with the strip of rubber 4,'

there would be no pressure from the outside to push the obstruction inand puncture the tube l, and if the projection should be longer than theprotector is high, it would hit the rounded top of 4 and glance off to3.

Various changes may be made in the details of construction withoutdeparting from the spirit and scope of the invention as defined in theclaim.

What is claimed is A nonepuncturable tire comprising an inner inflatabletube, a plurality of hollow rubber strips wound spirally around saidtube, said strip having a rounded outer surface and curved innersurfaces to conform to the contour of the tube, and a solid rubber stripsubstantially V-shaped wound between the spiral coils and the hollowstrips completely covering the inner inflatable tube.

ln testimony whereof we affix our signatures in presence of twowitnesses.

HARRIET BAILEY. PEARL E. BAILEY. lVitnesses ERNESTINE MCRAE, T. H. WARD.

copies of this patent may be obtained for ve cents each, by addressingthe Commissioner of Patents,

Washington, D. C. i

